In the 20th century, the subway system used professional sniffers to keep New Yorkers safe

Jun 27, 2017 |

The city’s subways of today have machines that can test air samples and look for potentially dangerous gas build-up or biological and chemical agents. However, before such technology was invented, the city hired James “Smelly” Kelly to walk the tracks using just his nose and a few homemade inventions, to find and report any leaks […more]

Posted in: New York

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